Thursday, June 3, 2010

Speed P6

A Van left Port Penang for Town Lalu at 9 a.m. A Car started its journey along the same route as the Van from starting point, two hours later. The car overtook the Van at 3 p.m. The speed of the Car was 30 km/h faster than the Van. The Van took 7 hours to reach Town Lalu. Find the distance between Port Penang and Town Lalu.

3 h 3 h !----------!-----------!9 am 12 noon 3 am

6 - 2 = 4 h

30 x 4 = 120 km Additional distance travelled by Car to catch up with Van in 4 h = Distance travelled by Van in the first 2 h